Roll libyuv to r1007 which includes a BUILD.gn for chromium.

BUG=none
TESTED=try bots built unittests
R=wjia@chromium.org

Review URL: https://codereview.chromium.org/294343006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@274274 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -258,7 +258,7 @@ deps = {
         "/trunk/jsoncpp/src/lib_json@" + Var("jsoncpp_revision"),
 
   "src/third_party/libyuv":
-    (Var("googlecode_url") % "libyuv") + "/trunk@1000",
+    (Var("googlecode_url") % "libyuv") + "/trunk@1007",
 
   "src/third_party/smhasher/src":
     (Var("googlecode_url") % "smhasher") + "/trunk@152",